When the products of a reaction have a lower enthalpy than the reactants:

select all that apply.
1.)the reaction is exothermic.
2.)the reaction is endothermic.
3.)the reactants lost energy.
4.)the change in enthalpy is positive.

What is the maximum number of electrons that an atomic orbital can contain?

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?